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  • Question: Show me the steps to solve: In midday sunshine, solar energy strikes Earth at the rate of about 1 kW/m2 . The average American house has 1600 square feet of available rooftop space, of which about 25% is appropriate for solar panels (not in shade, proper facing, etc.). Commercial solar panels are about 16% efficient (i.e., they collect about one-sixth

    Show me the steps to solve: In midday sunshine, solar energy strikes Earth at the rate of about 1 kW/m2 . The average American house has 1600 square feet of available rooftop space, of which about 25% is appropriate for solar panels (not in shade, proper facing, etc.). Commercial solar panels are about 16% efficient (i.e., they collect about one-sixth of the energy incident upon them). If the average American home carried the maximum number of solar panels, how long would it take to generate 40 kW⋅hr of energy? (Note: This is roughly the energy content of a gallon of gasoline.)
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